Feed mechanism for tabulating machines



Sept. 13, 1938. L. JENSEN' I FEED MECHANISM FOR TABULATING MACHINESFiled Feb. 13, 1936 4 Sheets-Sheet 1 o A woo 212 Sept. 13, 1938. L.JENSEN FEED MECHANISM FOR TABULATING MACHINES Filed Feb. 13, 1936 4Sheets-Sheet 2 a s R k w w 1 Sept. 13, 1938. JENSEN FEED MECHANISM FORTABULATING MACHINES Filed Feb. 13, 1936 4 Sheets-Sheet 3 Sept. 13, 1938.JENSEN FEED MECHANISM FOR TABULATING' MACHINES Filed Feb. 13, 1936 4Sheets-Sheet 4 Patented Sept. 13, 1936 UNITED STATES PATENT OFFICE LouisJensen, Chicago, 111., assignor to United Autographic Register 00.,Chicago, 111., a corporation of Illinois Application February 13, 1936,Serial No. 63,779

4 Claims.

This invention relates to feed mechanism for a typewriting or tabulatingmachine, whereby continuous-form stationery strips may be fed around therotatable platen roll without employing the usual presser mechanismprovided in conjunction with the platen roll.

The primary object of the invention is to provide a simple feedmechanism which may be mounted on the platen carriage of the machine andbe driven directly by the platen roll, advancing the stationery at thesame peripheral speed as the platen.

Heretofore endless belts have been used to engage marginal perforationsin the stationery strips and the belts have been looped directly aroundthe platen. The objection to this arrangement is found in its lack offlexibility, that is, the stationery must be of a certain width andspecial perforations had to be provided in the stationery at themargins. The driving sprockets on the driving roll if not placed at theedges of the roll interfered with the typing face of the platen. In thepresent invention the register perforations usually provided in pairsnear the center of the strip may be used. The endless belts beingmounted remote from the platen do not interfere in any way with itsusual operation. Preferably the mechanism is pivotally mounted on thecarriage so that it may be tilted back to facilitate leading thestationery from the supply packet around the platen. The invention isillustrated in a preferred embodiment in the accompanying drawings, inwhich-- Fig. 1 is a broken front elevational view of a power drivenplaten roll provided with a mechanism embodying the invention; Fig. 2, abroken longitudinal sectional view taken as indicated at line 2-2 ofFig. 1, with dotted lines indicating the mechanism tilted back from itsnormal operative position; Fig. 3, a broken sectional -view taken asindicated at line 3 of Fig. 1; Fig. 4, a broken transverse sectionalview taken as indicated at line 4 of Fig. 3; Fig. 5, a brokenelevational view showing a portion of the conveying belt and registerpin mounting; Fig. 6, a sectional view of the same taken as indicated atline 6 of Fig. 5; Fig. 7, a broken longitudinal sectional view showing amodified form of conveyor belt, taken as indicated at line 1 of Fig. 8;Fig. 8, a broken transverse sectional view taken as indicated at line 8of Fig. 7; and Fig. 9, a broken perspective view showing a portion ofthe modifled endless belt.

In the preferred embodiment illustrated in Figs. 1-6, A designates atypewriting or tabulating machine; B, an adjustable platen carriageprovided with a rotatable platen roll 3' which may be driven by suitablemechanism B; C, a rearwardly extending main frame mounted on thecarriage B; and D, an auxiliary frame which carries the feed mechanism.

The typewriting or tabulating machine A may be of any suitableconstruction and has type, not shown, adapted to strike continuous-formstationery I which is looped around the platen roll B. The platencarriage B is transversely adjustable on the machine A and providesjournals for the rotatable platen B which is driven by a motor andtiming mechanism B2 shown at the left of Fig. 1, through gears indicatedgenerally at I I.

The rearwardly extending frame 0 is fixedly mounted on the carriage B bymeans of cap screws i2, and supports at its rear end a cross bar [3 onwhich is mounted a plate H which, as illustrated, may serve as a supportfor a zigzag folded packet of stationery I from which thecontinuous-form strips ID may be drawn. However, it may be preferred toplace the packet in a container resting on the floor or a table in rearof the machine. The plate M then serves as a guide.

The auxiliary frame D comprises a pair of triangular brackets i6 whichare pivotally supported on the cross bar l3 and support at their upperends cross bars l1 and iii. A resilient presser member I9 is carried bybracket i9 which is adjustably secured to the cross bar ill by means bya thumb screw l9 so that suitable pressure may be exerted downwardlyagainst the plate I and insure proper withdrawal of the strips l0thereover.

A plate-like member 20 is fixedly mounted on a housing 2i by means ofspacing blocks 2| and screws 2|. The housing member has side walls 22,the lower ends of which are turned inwardly as indicated at 24 and arefixedly secured to the cross bars l1 and I8 by means of strap-likebrackets 25 and screws 25 The member 20 is provided with longitudinalslots 26 through which register pins extend to engage perforations Illin the stationery. The upper end portion of 2 heads 32 which may bemoved in slots 33 to tension the endless chains.

As shown in Figs. 4, 5 and 6, register pins 34 are provided at regularlyspaced intervals on the chains 8|. The pins are formed by pressing ahead I! over upward extensions 36 provided on central links between theside links 31. The links it and 31 may be held together by ordinarypivot pins 88. Preferably the heads are provided with a base flange 39which slides on the plate 20 and is adapted to move through openings 40provided in the guide portions 21. The drive shaft 28, as shown in Fig.1, extends laterally through a Journal member ll carried by the crossmembers I! and il. The end portion is provided with a spur gear 42 whichin its normal operative position meshes with gear 43 provided on theplaten carriage. The platen carriage B is provided with a spur gear 44which drives the gear member 43 by means of a train of idler gears 45and 48. These gears cause the pins 34 to travel at the same speed as theface of the platen, B, as will be readily understood. One lateral edgeportion of the plate-like member 20 has a hinge support 41 for a guideframe ll having longitudinal bars 4! which are adapted to press thestationary strips I0 against the plate 20 and insure the register pins34 coming into engagement with the register perforations.

In the modification illustrated in Figs. '7, 8 and 9, a lower driveshaft is provided with-pin wheels 52 having projections 52'- adapted toengage perforations 54 provided in an endless metallic belt 55. An idlershaft .ii is provided with sheaves 53 for the belt. The belt may beformed of bronze tape or the like and is provided at regular intervalswith outwardly extending pins 5 which are adapted to travel throughslots 51 provided in a plate-like member 58. The member 58 is providedat its upper end with a guide portion 59 for directing the stationeryfrom engagement with the pins. As best shown in Fig. 8 the plate-likemember 88 is provided with cross members ill which are bent downwardlyas indicated at if to provide openings 62 through which the belts maytravel. The feed mechanism is provided with a guide device 63 similar tothe one described above and the operation of the same.

To load either of the embodiments shown a latch member 64 is depressedand the auxiliary frame tilted back to the position indicated by thedotted lines in Fig. 2. This action will raise the presser member. andenable the operator to reach beneath the shaft 28 and direct a strip ofstationery beneath guide member 65, on the platen carriage, and aroundthe platen roll B. The auxiliary frame may then be swung back into theposition shown in Fig. 1 and the register perforations in the stationerybrought into engagement with the first pair of register pins 34.

The register pins may then be advanced to tension the stationery throughthe power mechanism B or by rotating a knob 68 provided at the end ofthe platen roll. The machine is then ready for use and the stationerywill be advanced in timed relation to the movement of the platen.

The foregoing detailed description has been given for clearness ofunderstanding only, and no unnecessary limitations should be understoodtherefrom, but the appended claims should be construed as broadly aspermissible, in view of the prior art.

What I regard as new and desire to secure by Letters Patent, is:

1. In a duplicating machine, feed mechanism for advancing overimpression receiving position stationery strips provided with registerperforations, comprising: a frame having a plate-like surface mountedabove and in rear of said impression receiving position, said surfacebeing provided with longitudinally extending narrow slots; 9. driveshaft journalled in the lower end portion of said frame; an idler shaftjournalled in the upper end portion of the frame; and a plurality ofendless belts looped in driving connection around said shafts beneaththe slots and provided with feed pins adapted to project through theslots into engagement with perforations in the stationery strips andslide on the plate-like surface.

2. A device as specified in claim 1, in which the upper ends of theslots are enlarged to permit the pins to pass through the plate-likesurface and the upper end portion of said surface is bent upwardly andaway from the belts so that the stationery will be automaticallydisengaged from the pins when reaching the upper ends of the frame.

3. A device as specified in claim 1, in which the frame is equipped atone lateral edge with a hinged guide member adapted to rest onstationery led over the plate-like surface of the frame and guide thestationery into engagement with the pins.

4. In a tabulating machine having a platen carriage equipped with apower driven platen roll, feed mechanism for stationery strips ledaround said platen, comprising: a frame mounted on the rear ofsaidcarriage and provided with a holder for a packet of zigzag foldedstationery strips provided with register perforations; and an auxiliaryframe mounted on the main frame and provided with a drive shaft gearedto said platen, an idler shaft ,ioumalled in said auxiliary frame,endless belts, provided with pins, looped in driving relation aroundsaid shafts, said pins being adapted to engage perforations instationery led from said packet around the platen, and a downwardlydirected adjustable presser arm mounted on said auxiliary frame andadapted .to bear against the stationery packet.

' LOUIS JENSEN.

